Lamp-shade.



No. 643,395. Farmed-Feb. [3. I990.

E. T. .BERGGREN.

L A M P S H A D E.

(Application filed Apr. 36, 1897.

(No lfinde l.)

lnv'enior:

Wifiness e s ms mums PETERS co, PHOTOJJTHO" WAEHINGTON, u. A:v

tlivrrnn S'rarns PATENT Fries.

EMIL TIIEOPI-IILUS BERGGREN, OF ST. PAUL, MINNESOTA, ASSIGNOR OE ONE-HALF TO FREDERICK Gr. BRADBURY, OF SAME PLACE.

LAM P-SHADE.

SPECIFICATION forming part of Letters Patent No. 643,395, dated February 13, 1900.

Application filed April 26, I897. Serial No. 634,050- (No model.)

To all whom it may concern:

Be it known that I, EMIL THnorHILUs BERGGREN, of St. Paul, Ramsey county, Minnesota, have invented certain Improvements in Lamp-Shades, of which the following is a specification.

My invention relates to improvements in lamp-shades adapted to be secured to incandescent-electric-lam p sockets; and to this end it consists in the construction hereinafter more specifically described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a perspective view of an electric lamp and socket with my improved lamp-shade applied thereto. Fig. 2 is across-section taken on the line X X looking toward the shade, and Figs. 3 and 4 are detail views of a modified form of construction.

In the drawings, A represents an ordinary lamp-socket with an incandescent-lamp bulb B mounted therein.

0 represents my improved lamp-shade, made of tin or other suitable material, mounted upon a socket by means of a spring-wire loop 2, which is secured to the shade by soldering its ends to the flanges 3, thereby reinforcing and strengthening the shade. The spring-wire loop is formed of a single piece of wire, which is bent into a loop 4 of proper size and strength to encircle and grip the socket, and thereby sustain the shadethereon. The spring-wire loop 2 constitutes an inner loop 4 and an outer loop 3. The inner loop 4 encircles and grips the socket, and the outer loop, which is composed of the ends of the wire, is fastened to the shade. Thus it will be seen that by pressing the flanges of the shade inwardly the inner loop is enlarged and the shade can be freely removed from the socket. The support as a whole extends laterally from and is adjacent to the shade, and the inner loop is closely adjacent the outer loop and the shade to which it is fastened.

In the modified form of construction shown in Figs. 3 and 4 the loop-embracing portion is formed of a flattened piece of spring metal,

and the inventor does not wish to confine himself to this style of construction as shown.

In the use of my device the shade is grasped in the hand and the flanges 8 and 9 pressed toward each other, thereby enlarging the loop for slipping over the socket, when it is released and allowed to expand, gripping the socket and supporting the shade and sustaining it in any set position. The lamp-bulb can then he slipped into the socket, as is ordinarily done with this style of reflector.

I claim- 1. A shade having a laterally-extending spring-wire loop which is adapted to encircle the socket and tightly grip the same; said loop having its ends bent to conform to the shape of and fastened to the shade, substantially as described.

2. In a device of the class described, a shade formed with flanges to which are fastened the ends of a spring-wire loop; said loop being formed laterally adjacent the shade and adapted to encircle the socket and sustain the shade upon the socket-support, substantially as described.

In a device of the class described, a shade provided with a laterally-extending supporting device consisting of a spring-wire loop formed closely adjacent the shade and having its ends extending toward the shade from the loop upon which ends the shade is substantially fastened as described.

In testimony whereof I affix my signature in presence of two witnesses.

'EilllL THEOPHILUS BERGGREN.

Witnesses:

MARTIN H. ALBIN, F. G. BRADBURY. 

